Search Results - "Kijima, Shizumasa"

A Novel Synthesis of 2, 3-Dimethoxy-5-methyl-p-benzoquinone by MINAMI, NORIO, KIJIMA, SHIZUMASA

“…2, 3-Dimethoxy-5-methyl-p-benzoquinone (3), an important intermediate in the synthesis of ubiquinones (1), was synthesized from 3, 4, 5-trimethoxysalicylic…”
Get full text

Synthesis of [3′-14C] coenzyme Q10 by Hamamura, Kimio, Yamatsu, Isao, Minami, Norio, Yamagishi, Yoji, Inai, Yuichi, Kijima, Shizumasa, Nakamura, Tetsuya

“…Radio‐labelled coenzyme Q10, labelled at the 3′‐position with 14C, was synthesized starting from natural solanesol and ethyl [3‐14C] acetoacetate. The…”
Get full text

Studies on Tocopherol Derivatives. II. Synthesis of Phosphomethyl Tocopheryl Acetates by NAKAMURA, TETSUYA, KIJIMA, SHIZUMASA

“…Three phosphomethyl tocopheryl acetates: 7-phosphomethyl-β-tocopheryl acetate (IXa), 5-phosphomethyl-A-tocopheryl acetate (IXb), 5-phosphomethyl-δ-tocopheryl…”
Get full text

Synthesis of deuterium-labelled coenzyme Q10 by Hamamura, Kimio, Yamagishi, Yoji, Kijima, Shizumasa, Suzuki, Takeshi, Mori, Yutaka, Nakamura, Tetsuya

“…Deuterium‐labelled coenzyme Q10 ([2‐CD3‐1′‐CD2]coenzyme Q10, coenzyme Q10‐d5 ) was synthesized by condensation of 2,3‐dimethoxy‐[5‐CD3]methyl‐1, 4‐hydroquinone…”
Get full text

Synthesis of [3′‐ 14 C] coenzyme Q 10 by Hamamura, Kimio, Yamatsu, Isao, Minami, Norio, Yamagishi, Yoji, Inai, Yuichi, Kijima, Shizumasa, Nakamura, Tetsuya

“…Radio‐labelled coenzyme Q 10 , labelled at the 3′‐position with 14 C, was synthesized starting from natural solanesol and ethyl [3‐ 14 C] acetoacetate. The…”
Get full text

Synthesis of deuterium‐labelled coenzyme Q 10 by Hamamura, Kimio, Yamagishi, Yoji, Kijima, Shizumasa, Suzuki, Takeshi, Mori, Yutaka, Nakamura, Tetsuya

“…Deuterium‐labelled coenzyme Q 10 ([2‐CD 3 ‐1′‐CD 2 ]coenzyme Q 10 , coenzyme Q 10 ‐d 5 ) was synthesized by condensation of 2,3‐dimethoxy‐[5‐CD 3 ]methyl‐1,…”
Get full text

Studies on Oxidation of Tocopherols. II. Oxidation Products of Tocopherol Model Compounds with Oxygen-Metal Complex by MINAMI, NORIO, KIJIMA, SHIZUMASA

“…Oxidation of the model compounds of tocopherols with bis (salicylidene) ethylenediiminocobalt (1) was examined. Oxidation of 6-hydroxy-2, 2, 5, 7,…”
Get full text

トコフェロール類の酸化に関する研究(第1報)トコフェロール類モデル化合物の光酸化生成物について by 南, 法夫, 貴島, 静正

Get full text

トコフェロール類の酸化に関する研究(第2報)トコフェロール類モデル化合物の酸素-金属錯体による酸化生成物について by 南, 法夫, 貴島, 静正

Get full text

Studies on Oxidation of Tocopherols. II. Oxidation Products of Tocopherol Model Compounds with Oxygen-Metal Complex by MINAMI, NORIO, KIJIMA, SHIZUMASA

Get full text

Studies on Tocopherol Derivatives. IV. Hydroxymethylation Reaction of [beta]-, [gamma]-Tocopherol and Their Model Compounds with Boric Acid by NAKAMURA, TETSUYA, KIJIMA, SHIZUMASA

“…Direct hydroxymethylation of β-(I) and γ-tocopherol (III) and their model compounds are established with boric acid catalyst. The yields of…”
Get full text

Studies on Tocopherol Derivatives. III. Oxidation of [delta]-Tocopherol and 6-Hydroxy-2, 2, 8-trimethylchroman by NAKAMURA, TETSUYA, KIJIMA, SHIZUMASA

“…Oxidation reaction of d-δ-tocopherol (I) and δ-tocopherol model compound (II) are carried out with silver nitrate as oxidizing agent in ethyl alcohol. Three…”
Get full text

Studies on Tocopherol Derivatives. I. Conversion of [beta]-, [gamma]-, and [delta]-Tocopherol to [alpha]-Tocopherol by NAKAMURA, TETSUYA, KIJIMA, SHIZUMASA

“…A four-step methylation of β-, γ-, and δ-tocopherol to α-tocopherol is described. All of the intermediates are isolated and characterized. The purities of…”
Get full text

Reduction of o-Acylphenols through Ethyl o-Acylphenylcarbonates to o-Alkylphenols with Sodium Borohydride by MINAMI, NORIO, KIJIMA, SHIZUMASA

“…It was found that the ethoxycarbonyl derivatives of o-acylphenols were reduced to the corresponding o-alkylphenols by sodium borohydride under mild conditions…”
Get full text

Reduction of o-Hydroxyaromatic Carboxylic Acids through Ethoxycarbonyl-Derivatives with Sodium Borohydride by MINAMI, NORIO, KIJIMA, SHIZUMASA

“…It was found that the ethoxycarbonyl derivative (2) of salicylic acid (1) was reduced to o-cresol (3) with sodium borohydride in good yield and the best…”
Get full text

Studies on Tocopherol Derivatives. IV. Hydroxymethylation Reaction of β-, γ-Tocopherol and Their Model Compounds with Boric Acid by NAKAMURA, TETSUYA, KIJIMA, SHIZUMASA

“…Direct hydroxymethylation of β-(I) and γ-tocopherol (III) and their model compounds are established with boric acid catalyst. The yields of…”
Get full text

Studies on Oxidation of Tocopherols. I. The Products of Tocopherol Model Compounds by Photo-Oxidation by MINAMI, NORIO, KIJIMA, SHIZUMASA

“…Since there is little report on the photo-oxidation of tocopherols, known as the natural antioxidant, photo-oxidation of a model compound of tocopherols was…”
Get full text

Studies on Tocopherol Derivatives. III. Oxidation of δ-Tocopherol and 6-Hydroxy-2, 2, 8-trimethylchroman by NAKAMURA, TETSUYA, KIJIMA, SHIZUMASA

“…Oxidation reaction of d-δ-tocopherol (I) and δ-tocopherol model compound (II) are carried out with silver nitrate as oxidizing agent in ethyl alcohol. Three…”
Get full text

Studies on Tocopherol Derivatives. I. Conversion of β-, γ-, and δ-Tocopherol to α-Tocopherol by NAKAMURA, TETSUYA, KIJIMA, SHIZUMASA

“…A four-step methylation of β-, γ-, and δ-tocopherol to α-tocopherol is described. All of the intermediates are isolated and characterized. The purities of…”
Get full text